128 IGUANID&. 
From snout to vent .... 83 millim. 
WAIL | Lteaatiad dep caaenee soit 160s, 
Fore limb ....../..... 40 ,, 
Hind limb............ 70,4, 
Paraguay. 
19. CHALARODON. 
Chalarodon, Peters, Mon. Berl. Ac. 1854, p. 616, and Reise n. 
Mossamb. iii. p. 33. 
Tympanum distinct. Body depressed; a dorsal crest; dorsal 
scales small. Upper head-seales slightly enlarged; occipital large. 
A transverse gular fold. Digits denticulated laterally, with sharply- 
keeled lamelle inferiorly. No femoral pores. Tail long, round. 
Lateral teeth tricuspid; pterygoid teeth. No sternal fontanelle. 
Abdominal ribs. 
Madagascar. 
1. Chalarodon madagascariensis. 
Chalarodon madagascariensis, Peters, WU. cc., Mossamb. p. 34, pl. vi. 
fig. 3. 
Head moderately large, short, rounded, once and one third as 
long as broad; canthus rostralis and supraciliary edge angular; 
nostril pierced above the canthus rostralis, nearer the end of the 
snout than the orbit; tympanum vertically oval, as large as the 
eye-opening. Upper head-scales uni- or tricarinate, smaller on the 
supraocular region; occipital large and round; a series of large 
infraorbitals; eight or nine upper labials. Gular fold strong. 
Scales on the body small, subimbricate, keeled, largest on the belly, 
smallest on the flanks; a series of enlarged scales, indication of a 
dorsal crest, along the nape and back. The adpressed hind limb 
reaches the nostril; digits long and slender, claws long, falciform. 
Tail roundish, not quite twice as long as head and body, covered 
with small, equal, keeled scales. Pinkish grey above, with darker 
angular transverse bands on the back, separated by round whitish 
spots; a large black spot on the occipital; limbs with dark cross 
bands ; a white, black-edged band on the posterior side of the thigh; 
lower surfaces whitish. 
The unique specimen in the collection having lost a portion of 
the tail, the following dimensions are taken from Peters’s descrip- 
tion :— 
Total length .......... 142 millim 
ald dic hes jensigng tae ark toed 14.—C,, 
Width of head ........ 95 ,, 
Body’ wise a acing eee eee 36 35 
Bote HM ss40 sac ce: 25 5 
Hind limb... s eevee es 43, 
WAM, (2 Sb ctocusee cate be 6 92° 34 
South-western coast of Madagascar. 
a. Ye. St. Augustin’s Bay. Prof. Peters [P.]. (One 
of the types.) 
